<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="timer"></div>
</body>
<script>
    /**
     * 在timer中显示倒计时10秒钟
     * 时间到时，跳转到百度的首页
    */
   var timer = document.getElementById("timer");
   var count = 10;

   var intervalId = setInterval(function(){
       count = count - 1;
       timer.innerHTML = count + "秒后跳转到百度";
       if(count == 0){
           clearInterval(intervalId);
//           location.href = "http://baidu.com";
           location.href = "./demo11.html";
       }
   },1000)

</script>
</html>